SINCE 1828
dictionary
thesaurus
view recents

pseudosphere

noun
Save Word
pseu·​do·​sphere | \ ˈsüdō+ˌ- \

Definition of pseudosphere

: a surface of constant negative curvature (as generated by the revolution of a tractrix about its axis)

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

History and Etymology for pseudosphere

International Scientific Vocabulary pseud- + sphere: probably originally formed as Italian pseudosfera

Keep scrolling for more

Learn More about pseudosphere

Statistics for pseudosphere

Cite this Entry

“Pseudosphere.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pseudosphere. Accessed 24 Jan. 2021.

Comments on pseudosphere

What made you want to look up pseudosphere? Please tell us where you read or heard it (including the quote, if possible).

Show Comments  Hide Comments 

WORD OF THE DAY

insouciance

Listen to the pronunciation of insouciance

See Definitions and Examples »

Test Your Vocabulary

Slippery Words Quiz—Changing with the Times

  • ducreux self portrait yawning
  • What is an earlier meaning of nice?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Typeshift

Anagram puzzles meet word search.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Words at Play
Ask the Editors
Word Games